Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a equipe quando a data de nomeação é 23 de março de 2011?
 ###Tabelas: CREATE TABLE managerial_changes (managerial_changes_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Outgoing manager VARCHAR, Manner of departure VARCHAR, Date of vacancy VARCHAR, Incoming manager VARCHAR, Date of appointment VARCHAR, Position in Table VARCHAR) CREATE TABLE singles_runner-up (singles_runner-up_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score VARCHAR) CREATE TABLE spin-offs (spin-offs_id AUTO_INCREMENT PRIMARY KEY, Series VARCHAR, Premiere date VARCHAR, No. of seasons INT, City VARCHAR, Starring VARCHAR) CREATE TABLE manchester_and_district_challenge_cup (manchester_and_district_challenge_cup_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Round VARCHAR, Opponents VARCHAR, H / A VARCHAR, Result F – A VARCHAR) CREATE TABLE current_and_former_player_information (current_and_former_player_information_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Total W-L VARCHAR, Singles W-L VARCHAR, Doubles W-L VARCHAR, No. of ties INT, First year played INT, No. of years played INT)  
SELECT Team FROM managerial_changes WHERE Date of appointment = 23 March 2011